This HTML version of the ABNF from file <draft-ietf-sip-rfc2543bis-00.abnf> is automatically generated using the ABNF2HTML $Revision: 1.26 $ tool provided by Inet Technologies, Inc. written by Brian Bidulock.
This version of ABNF is for informational purposes only and is intended as a tool to help read the ABNF specification. Please see the Copyright and Disclaimers at the end of this document. For definitive syntax descriptions, please refer to the source IETF documents.
The protocol syntax is presented in ABNF according to RFC2234 with extensions from RFC822. This ABNF browser was generated from file <draft-ietf-sip-rfc2543bis-00.abnf> on Fri Aug 11 01:30:40 CDT 2000.
This document consists of:
The productions for the ABNF specification are provided below.
| Rule Name | Production or Comment | |
|---|---|---|
| = | "sip:" [userinfo "@"] hostport url-parameters [headers] | |
| = | [user | telephone-subscriber] [":" password] | |
| = | *( unreserved | escaped | "&" | "=" | "+" | "$" | "," | ";" | "?" | "/" ) | |
| = | <defined in [RFC2806]> | |
| = | *( unreserved | escaped | "&" | "=" | "+" | "$" | "," ) | |
| = | host [":" port] | |
| = | hostname | IPv4address | IPv6reference | |
| = | *( domainlabel "." ) toplabel ["."] | |
| = | alphanum | alphanum *( alphanum | "-" ) alphanum | |
| = | alpha | alpha *( alphanum | "-" ) alphanum | |
| = | 1*3DIGIT "." 1*3DIGIT "." 1*3DIGIT "." 1*3DIGIT | |
| = | "[" IPv6address "]" | |
| = | hexpart [":" IPv4address] | |
| = | hexseq | hexseq "::" [hexseq] | "::" [hexseq] | |
| = | hex4 *( ":" hex4 ) | |
| = | 1*4HEX | |
| = | 1*DIGIT | |
| = | *( ";" url-parameter ) | |
| = | transport-param | user-param | method-param | ttl-param | maddr-param | other-param | |
| = | "transport=" ( "udp" | "tcp" | "sctp" | "tls" | other-transport ) | |
| = | token | |
| = | "ttl=" ttl | |
| = |
1*3DIGIT ; 0 to 255
|
|
| = | "maddr=" host | |
| = | "user=" ( "phone" | "ip" | other-user ) | |
| = | token | |
| = | "method=" Method | |
| = | "tag=" UUID | |
| = | 1*( HEX | "-" ) | |
| = | pname ["=" pvalue] | |
| = | 1*paramchar | |
| = | 1*paramchar | |
| = | param-reserved | unreserved | escaped | |
| = | "[" | "]" | "/" | "?" | ":" | "@" | "&" | "+" | "$" | |
| = | "?" header *( "&" header ) | |
| = | hname "=" hvalue | |
| = | 1*( hnv-unreserved | unreserved | escaped ) | |
| = | *( hnv-unreserved | unreserved | escaped ) | |
| = | "[" | "]" | "/" | "?" | ":" | "@" | "+" | "$" | |
| = | <defined in [RFC2068]> | |
| = | Request | Response | |
| = | start-line *message-header CRLF [message-body] | |
| = |
Request-Line | ; Section 4.1
Status-Line ; Section 5.1 |
|
| = | ( general-header | request-header | response-header | entity-header ) | |
| = | <defined in [RFC2068]> | |
| = |
Request-Line ; Section 4.1
*( general-header | request-header | entity-header ) CRLF [message-body] ; Section 8 |
|
| = | Method SP Request-URI SP SIP-version CRLF | |
| = | SIP-URL | absoluteURI | |
| = |
Accept ; Section 6.7
| Accept-Encoding ; Section 6.8 | Accept-Language ; Section 6.9 | Call-ID ; Section 6.13 | Contact ; Section 6.15 | CSeq ; Section 6.21 | Date ; Section 6.22 | Encryption ; Section 6.23 | From ; Section 6.25 | Organization ; Section 6.30 | Record-Route ; Section 6.35 | Require ; Section 6.36 | Supported ; Section 6.42 | Timestamp ; Section 6.43 | To ; Section 6.44 | User-Agent ; Section 6.46 | Via ; Section 6.47 |
|
| = |
Allow ; Section 6.11
| Content-Disposition ; Section 6.16 | Content-Encoding ; Section 6.17 | Content-Language ; Section 6.18 | Content-Length ; Section 6.19 | Content-Type ; Section 6.20 | Expires ; Section 6.24 |
|
| = |
Authorization ; Section 6.12
| Hide ; Section 6.26 | In-Reply-To ; Section 6.27 | Max-Forwards ; Section 6.28 | Priority ; Section 6.31 | Proxy-Authorization ; Section 6.33 | Proxy-Require ; Section 6.34 | Route ; Section 6.39 | Response-Key ; Section 6.37 | Subject ; Section 6.41 |
|
| = |
Proxy-Authenticate ; Section 6.32
| Retry-After ; Section 6.38 | Server ; Section 6.40 | Unsupported ; Section 6.45 | Warning ; Section 6.48 | WWW-Authenticate ; Section 6.49 |
|
| = | "INVITE" | "ACK" | "OPTIONS" | "BYE" | "CANCEL" | "REGISTER" | extension-method | |
| = | token | |
| = | token | |
| = |
Status-Line ; Section 5.1
*( general-header | response-header | entity-header ) CRLF [message-body] ; Section 8 |
|
| = | SIP-version SP Status-Code SP Reason-Phrase CRLF | |
| = |
"SIP/2.1" ; I'm guessing...
|
|
| = |
Informational ;Fig. 4
| Success ;Fig. 4 | Redirection ;Fig. 5 | Client-Error ;Fig. 6 | Server-Error ;Fig. 7 | Global-Failure ;Fig. 8 | extension-code |
|
| = | 3DIGIT | |
| = | *<TEXT-UTF8, excluding CR, LF> | |
| = |
"100" ; Trying
| "180" ; Ringing | "181" ; Call Is Being Forwarded | "182" ; Queued | "183" ; Session Progress |
|
| = |
"200" ; OK
|
|
| = |
"300" ; Multiple Choices
| "301" ; Moved Permanently | "302" ; Moved Temporarily | "305" ; Use Proxy | "380" ; Alternative Service |
|
| = |
"400" ; Bad Request
| "401" ; Unauthorized | "402" ; Payment Required | "403" ; Forbidden | "404" ; Not Found | "405" ; Method Not Allowed | "406" ; Not Acceptable | "407" ; Proxy Authentication Required | "408" ; Request Timeout | "409" ; Conflict | "410" ; Gone | "411" ; Length Required | "413" ; Request Entity Too Large | "414" ; Request-URI Too Large | "415" ; Unsupported Media Type | "420" ; Bad Extension | "480" ; Temporarily not available | "481" ; Call Leg/Transaction Does Not Exist | "482" ; Loop Detected | "483" ; Too Many Hops | "484" ; Address Incomplete | "485" ; Ambiguous | "486" ; Busy Here | "487" ; Request Cancelled | "488" ; Not Acceptable Here |
|
| = |
"500" ; Internal Server Error
| "501" ; Not Implemented | "502" ; Bad Gateway | "503" ; Service Unavailable | "504" ; Gateway Time-out | "505" ; SIP Version not supported |
|
| = |
"600" ; Busy Everywhere
| "603" ; Decline | "604" ; Does not exist anywhere | "606" ; Not Acceptable |
|
| = | field-name ":" [field-value] CRLF | |
| = | token | |
| = | *( field-content | LWS ) | |
| = | < the OCTETs making up the field-value and consisting of either *TEXT-UTF8 or combinations of token, separators, and quoted-string> | |
| = | <defined in [RFC2068]> | |
| = | <defined in [RFC2068]> | |
| = | <defined in [RFC2068]> | |
| = | "Alert-Info" ":" #( "<" URI ">" *( ";" generic-param ) ) | |
| = | "Allow" ":" 1#Method | |
| = | token ["@" token] | |
| = | ( "Call-ID" | "i" ) ":" callid | |
| = | "Call-Info" ":" #( "<" URI ">" [";" "purpose" "=" ( "icon" | "info" | "card" | token )] *( ";" generic-param ) ) | |
| = | ( "Contact" | "m" ) ":" ( "*" | ( 1#( ( name-addr | addr-spec ) *( ";" contact-params ) ) ) ) | |
| = | [display-name] "<" addr-spec ">" | |
| = | SIP-URL | URI | |
| = | *token | quoted-string | |
| = | "q" "=" qvalue | "action" "=" "proxy" | "redirect" | "expires" "=" delta-seconds | DQUOTE SIP-date DQUOTE | contact-extension | |
| = | <defined in [RFC2068]> | |
| = | generic-param | |
| = | "Content-Disposition" ":" disposition-type *( ";" disposition-parm ) | |
| = | "render" | "session" | extension-token | |
| = | handling-parm | parameter | |
| = | <defined in [RFC2068]> | |
| = | "handling" "=" ( "optional" | "required" | other-handling ) | |
| = | token | |
| = | ( "Content-Encoding" | "e" ) ":" | |
| = | <defined in [RFC2068]> | |
| = | ( "Content-Length" | "l" ) ":" 1*DIGIT | |
| = | ( "Content-Type" | "c" ) ":" media-type | |
| = | <defined in [RFC2068]> | |
| = | "CSeq" ":" 1*DIGIT Method | |
| = | "Date" ":" SIP-date | |
| = | rfc1123-date | |
| = | <defined in [RFC2068]> | |
| = | "Encryption" ":" encryption-scheme 1*SP #encryption-params | |
| = | token | |
| = | generic-param | |
| = | token ["=" ( token | quoted-string )] | |
| = | "Expires" ":" ( SIP-date | delta-seconds ) | |
| = | ( "From" | "f" ) ":" ( name-addr | addr-spec ) [";" tag-param] *( ";" addr-extension ) | |
| = | "tag=" token | |
| = | generic-param | |
| = | "Hide" ":" ( "route" | "hop" | other-hide ) | |
| = | token | |
| = | "In-Reply-To" ":" 1#callid | |
| = | "Max-Forwards" ":" 1*DIGIT | |
| = | "Organization" ":" TEXT-UTF8-TRIM | |
| = | "Priority" ":" priority-value | |
| = | "emergency" | "urgent" | "normal" | "non-urgent" | other-priority | |
| = | token | |
| = | <defined in [RFC2068]> | |
| = | <defined in [RFC2068]> | |
| = | "Record-Route" ":" 1#name-addr [rr-extension] | |
| = | token ["=" ( token | quoted-string )] | |
| = | "Require" ":" 1#option-tag | |
| = | "Response-Key" ":" key-scheme 1*SP #key-param | |
| = | token | |
| = | generic-param | |
| = | "Retry-After" ":" ( SIP-date | delta-seconds ) [comment] [";" "duration" "=" delta-seconds] | |
| = | "Route" ":" 1#name-addr [route-extension] | |
| = | generic-param | |
| = | <defined in [RFC2068]> | |
| = | ( "Subject" | "s" ) ":" TEXT-UTF8-TRIM | |
| = | ( "Supported" | "k" ) ":" 1#option-tag | |
| = | "Timestamp" ":" *( DIGIT ) ["." *( DIGIT )] [delay] | |
| = | *( DIGIT ) ["." *( DIGIT )] | |
| = | ( "To" | "t" ) ":" ( name-addr | addr-spec ) [";" tag-param] *( ";" addr-extension ) | |
| = | "Unsupported" ":" 1#option-tag | |
| = | <defined in [RFC2068]> | |
| = | ( "Via" | "v" ) ":" 1#( sent-protocol sent-by *( ";" via-params ) [comment] ) | |
| = | via-hidden | via-ttl | via-maddr | via-received | via-branch | via-extension | |
| = | "hidden" | |
| = | "ttl" "=" ttl | |
| = | "maddr" "=" maddr | |
| = | "received" "=" host [":" port] | |
| = | "branch" "=" token | |
| = | token ["=" ( token | quoted-string )] | |
| = | protocol-name "/" protocol-version "/" transport | |
| = | "SIP" | token | |
| = | token | |
| = | "UDP" | "TCP" | token | |
| = | ( host [":" port] ) | ( concealed-host ) | |
| = | token | |
| = |
1*3DIGIT ; 0 to 255
|
|
| = | "Warning" ":" 1#warning-value | |
| = | warn-code SP warn-agent SP warn-text | |
| = | 3DIGIT | |
| = |
( host [":" port] ) | pseudonym ; the name or pseudonym of the server adding
; the Warning header, for use in debugging |
|
| = | <defined in [RFC2068]> | |
| = | quoted-string | |
| = | SIP-URL | |
| = |
Request-URI ; as defined in Section 4.3
|
|
| = | "WWW-Authenticate" ":" "pgp" pgp-challenge | |
| = | #pgp-params | |
| = | realm | pgp-version | pgp-micalgorithm | pgp-pubalgorithm | nonce | |
| = | "realm" "=" realm-value | |
| = | quoted-string | |
| = | "version" "=" DQUOTE DIGIT *( "." DIGIT ) *letter DQUOTE | |
| = | "algorithm" "=" ( "md5" | "sha1" | token | "ripemd160" | "MD2" | "TIGER192" | "HAVAL-5-160" ) | |
| = | "pubkey" "=" ( "rsa" | "rsa-encrypt" | "rsa-sign" | "elgamal" | "dsa" | token ) | |
| = | "nonce" "=" nonce-value | |
| = | quoted-string | |
| = | "Authorization" ":" "pgp" #pgp-response | |
| = | realm | pgp-version | pgp-signature | signed-by | nonce | |
| = | "signature" "=" quoted-string | |
| = | "signed-by" "=" DQUOTE URI DQUOTE | |
| = | "Encryption" ":" "pgp" pgp-eparams | |
| = | 1#( pgp-version | pgp-encoding ) | |
| = | "encoding" "=" "ascii" | token | |
| = | "Response-Key" ":" "pgp" pgp-eparams | |
| = | 1#( pgp-version | pgp-encoding | pgp-key ) | |
| = | "key" "=" quoted-string | |
| = | ( CR CR ) | ( LF LF ) | ( CR LF CR LF ) | |
| = |
%x00-FF ; any 8-bit sequence of data
|
|
| = |
%x00-7F ; any US-ASCII character (octets 0 - 127)
|
|
| = | "A" | "B" | "C" | "D" | "E" | "F" | "G" | "H" | "I" | "J" | "K" | "L" | "M" | "N" | "O" | "P" | "Q" | "R" | "S" | "T" | "U" | "V" | "W" | "X" | "Y" | "Z" | |
| = | "a" | "b" | "c" | "d" | "e" | "f" | "g" | "h" | "i" | "j" | "k" | "l" | "m" | "n" | "o" | "p" | "q" | "r" | "s" | "t" | "u" | "v" | "w" | "x" | "y" | "z" | |
| = | lowalpha | upalpha | |
| = | "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" | |
| = | alpha | DIGIT | |
| = |
%x00-1F | %x7F ; (octets 0 -- 31) and DEL (127)
|
|
| = |
%d13 ; US-ASCII CR, carriage return character
|
|
| = |
%d10 ; US-ASCII LF, line feed character
|
|
| = |
%d32 ; US-ASCII SP, space character
|
|
| = |
%d09 ; US-ASCII HT, horizontal tab character
|
|
| = |
CR LF ; typically the end of a line
|
|
| = | alphanum | mark | |
| = | "-" | "_" | "." | "!" | "~" | "*" | "'" | "(" | ")" | |
| = | "%" HEX HEX | |
| = |
[CRLF] 1*( SP | HT ) ; linear whitespace
|
|
| = | *( TEXT-UTF8char | LWS ) | |
| = | *TEXT-UTF8char *( *LWS TEXT-UTF8char ) | |
| = | %x21-7E | UTF8-NONASCII | |
| = | %xC0-DF 1UTF8-CONT | %xE0-EF 2UTF8-CONT | %xF0-F7 3UTF8-CONT | %xF8-FB 4UTF8-CONT | %xFC-FD 5UTF8-CONT | |
| = | %x80-BF | |
| = | "A" | "B" | "C" | "D" | "E" | "F" | "a" | "b" | "c" | "d" | "e" | "f" | DIGIT | |
| = | 1*( alphanum | "-" | "." | "!" | "%" | "*" | "_" | "+" | "`" | "'" | "~" ) | |
| = | "(" | ")" | "<" | ">" | "@" | "," | ";" | ":" | "\" | DQUOTE | "/" | "[" | "]" | "?" | "=" | "{" | "}" | SP | HT | |
| = | "(" *( ctext | quoted-pair | comment ) ")" | |
| = | < any TEXT-UTF8 excluding "(" and ")"> | |
| = | ( DQUOTE *( qdtext | quoted-pair ) DQUOTE ) | |
| = | LWS | %x21 | %x23-5B | %x5D-7E | UTF8-NONASCII | |
| = | " \ " CHAR | |
| = | <defined in [RFC2234]> | |
| = | <defined in [RFC2068]> | |
Following is a cross-reference list for the ABNF. On the left are references to productions, on the right are links to the rules in which those productions are referenced.
This ABNF2HTML generated document is a derivative work of an Internet-Draft or RFC and is:
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